Tomorrow's World: People of Science

David Attenborough talks about his admiration for the achievements of Charles Darwin.

Dame Uta Frith tells Brian Cox of her admiration for British mathematician Alice Lee.

Writer Bill Bryson talks to Brian Cox about 18th century polymath Benjamin Franklin.

Dame Sally Davies talks to Brian Cox about Alexander Fleming and Howard Florey.

David Spiegelhalter discusses the life and works of Thomas Bayes and Ronald Fisher.

Professor Julia Higgins on the life and work of English scientist Michael Faraday.